Sliver-working machine.



E. K. SWIFT.

SLIVER WORKING MACHINE.

APPLIUATION FILED APR.12, 1910.

Patented NOV. 17, 1914.

UNlT TATS UFFlCE.

ELIJ'AH KENT SWIFT, OF \VHITINSVILLE, MASSACHUSETTS, ASSIGNOR TO THE WI-IITIN.

MACHINE WORKS, 013 "WHITINSVILLE, MASSACHUSETTS, CORPORATION OF MAS- SAGI-IUSETTS.

SLIVER-WORKING MACHINE.

Specification 01. Letters Patent.

Patented Nov. 17, 1914.

To all whom it may concern Be it known that I, ELIJAH KENT SWIFT, a citizen of the United States, and a resident of WVhitinsville, in the county of Worcester, Commonwealth of Massachusetts, have 1nvented certain new and useful Improve: ments in Sliver- WVorking Machines, 01 which the following is a full, true, and concise specification.

This invention is an improved means for conducting sliver to the delivery rolls 1n drawing frames and similar sliver-Working machines, and relates more particularly to the adjustment of the sliver-conducting guides or trumpets of such machines whereby the distance from the ends of the trumpet guides to the bite of the rolls may be varied in accordance with the length of the staple of which thesliver is composed or in accordance with such other condition as may be desired to be met. Included with this general object, the invention involves a novel and simple organization of parts whereby changes of adjustment varying from eX tremely slight changes to very considerable ones can be accomplished with a minimum of time and effort and with a high degree of precision and whereby a group or row of several trumpets can be simultaneously moved in adjustment to the same extent, whether that be slight or considerable. The invention thus provides against the delay and trouble incident to the selection and substitution of trumpets of different lengths of different kinds of work or the cutting-oil or remaking of trumpets already in place, as now generally practised, andit thus permits such machines to be manufactured and delivered for use, having a standard set of trumpets, but possessing adaptability to any length of staple that the user thereof may desire to run, and allowing him to change his machine over to any different kind of work with the least expense and inconvenience whenever and as often as he may desire.

A preferred embodiment of the invention is described below in connection with the drawings forming a part hereof, and the distinguishing features of the invention are more particularly pointed out in the appended claims.

In the drawings, F igure 1 is a top plan, with parts broken away, of a cotton drawing ilirame containing this invention, but being otherwise of well. known design and operation, as will be readily understood by those skilled in this art; Fig. 2 is a vertical transverse section on enlarged scale of the principal parts of Fig.1; Fig. 3 is a vertical section of a portion of the roll cover and certain of its su iiporting members, taken on line III-III of Fig. 2.

The sliver-guide trumpets shown in the drawings are marked 1 and are carried by pivoted trumpct-holders 2 which are suitably coiutter-balanced for cooperation with the sliding bars 3 of the stop-motion mechanism of the machine in the usual way. The trilimpet-holders are pivoted to lugs, marked l in Fig. 3, projecting from the under side of a plate fivwhich constitutes the cover of the delivery-rolls, and normally occupy a position in which they support their respective trumpets in slots or recesses formed in the said cover plate, substantially flush with the upper surface thereof, as indicated by the drawings. The rolls are marked (3, being usually made in one length with the length oi the drawing frame, and their operation, as will be well understood. is to draw the slivers th rough and from the several trumpets and deliver them to corre- SDOIltllilg (mi l9? heads or other receiving devices 10, shown in plan outline in Fig. 1 and appearing beneath the rolls in that figure. hen the sliver breaks or fails for any cause. the trumpet drops back, due to the cou ntcrwei ght, into an unobstructing position with respect to its sliding bar 3, and stops the machine. as will also be well understood by those skilled in this art. The roll cover 5 may be made continuous with the rolls, or it may be made in sections each common to one or more slivers, as more commonly the case, and as illustrated in Fig. 1 the cover or cover section 5 is common to several slivers. which arrangement is preferred. Such cover is hinged by its rear lugs 7 to the arms 8 of a fixed bracket 9, oi. which there may be any suitable number according to the length of the cover, so that the latter can be lifted and turned up and backwardly, carrying with it in such movement all of the holders and trumpets for which it forms the support. When in its lower, closed position, shown in Fig. 2, the cover protects and shelters the delivery rolls, while sup porting the several trumpet-holders in their proper positions to cooperate therewith and with the stop motion mechanism, as above explained.

The appropriate degree of separation between the tips of the trumpets and the line of bite of the delivery-rolls is determined by the character of the sliver, more particularly by the average length of its staple, and such separation is now commonly obtained by grinding off the ends of extra long trumpets until they are reduced to'an appropriate length. The adjustment thus obtained is practically a permanent one for each set of trumpets thus cut off, since the distance of separation cannot subsequently be lessened except by the substitution of longer trumpets. Elimination of these objections is attained by the present invention by the provision of means for varying the distance between the rolls and trumpets by altering the position of the roll cover on which the trumpets are supported, instead of altering or even removing the trumpets themselves; and to this end, the roll cover 5, which can be of the same design and con struetion in every respect as heretofore and now generally employed, is caused to rest upon or against one or more adjustable abutments, co-acting with the hinge of the cover and serving to support it in its closed or covering position. As taken for illustration herein, such adjustable abutments are provided by setscrews 11 tapped into suitable sockets in the arms 8 of the fixed bracket 9. These screws may be raised or lowered by screwing them into or out of their threaded sockets in an obvious manner, and when the cover is brought to its closed position it bears upon their heads or tops and is thereby supported in any desired position as determined by the adjustment of the screws with reference to the axis of the cover hinge. The trumpet-holders and their trumpets are thus held at any desired distance suitable for the character of the sliver used, and without interfering with the relations necessary to exist between the trumpet holder 2 and the stop-motion mechanism above explained. Lock-nuts 12 are placed on the screws so that their positions can be rendered secure against accidental change.

While I have elected to place the setscrews close to the hinge axis of the cover, and in the rear of the rolls, it will be understood that they may be elsewhere located with equal effect, as for instance upon the cover instead of upon the bracket arm, and it will be observed that various changes and modifications in the form and mode of operation of the said adjustable abutments may be made without departing from my invention and without sacrificing or materially modifying the benefits to be derived therefrom.

I claim:

1. In a sliver-working machine having a stop-motion mechanism, the combination with the sliverdelivering rolls and a hinged cover therefor, of a trumpet pivotally mounted on said hinged cover so as to cooperate with said stop-motion mechanism, and means acting on the hinged cover for adj ustably varying the working distance of the trumpet from the rolls.

In a sliver-working machine, means for simultaneously adjusting the working distance between a series of the stop-motion trumpets thereof and the delivery rolls which receive the sliver from such trumpets, comprising in combination, a cover for said delivery rolls having a plurality of trumpets pivotally mounted thereon, and means for bodily adjusting the distance of said cover above the rolls.

'3. In a sliver-working machine, a pair of rolls, a hinged cover therefor and one or more stop-motion trumpets pivotally mounted on said cover in cooperative position with respect to said rolls, in combination with one or more adjustable abutments coacting with the hinge of said cover and operative to support the said cover at different working distances from said rolls.

4. The combination in a sliver-working machine of a pair of rolls, a fixed'bracket, aplate or cover hinged on said bracket to move toward and over said rolls and supporting one or more trumpets, and an adjustable abutment carried by said bracket and operative to limit the aforesaid movement of said plate or cover.

5. In a sliver-working machine having a stop-motion mechanism, a pair of rolls,

a: cover therefor and a support on which said cover is hinged, in combination with a trumpet pivotally mounted on said hinged cover and cooperating with the stop-motion mechanism, and a setscrew on the support forming an adjustable abutment for said cover whereby the distance of said trumpet from the bite of the rolls may be adjusted.

6. In a sliver-working machine having a stop-motion mechanism, the combination with the rolls and the hinged cover therefor,

of a series of trumpet holders pivotally carried on said cover and adapted to cooperate with the stop motion mechanism, and means for adjusting the position of said cover from the rolls without altering the relation of said holders to the said mechanism.

7. In a sliver-working machine having a stop-motion mechanism including a sliding bar,-a bracket forming the support for the roll-cover of the machine and the sliding bar of the stop-motion mechanism thereof and means carried by said bracket for varying the position of said r011 cover.

8. In a sliver-working machine, an uprightbracket having one or more arms, a roll cover hinged to the rear extremity of said arm or arms, a series of trumpet holders pivotally mounted on said cover, and one or more vertically adjustable abutments for 10 said cover mounted on the forward portions of said arm or arms to contact With the underside of the cover in advance of the hinge.

Intestimony whereof, I have signed this specification in the presence of two wit- 15 Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G. a 

